Essentially, the Nixon Doctrine was Richard Nixon's foreign policy manifesto. It outlined that the United States would provide help to foreign nations combatting communism with financial aid rather than military aid. This essentially was to limit the deployment of US military abroad, like in Vietnam or Korea.
The Nixon Doctrine was in line with Nixon's idea of "Detente" which literally means "relaxation" in French. Nixon wanted to defuse relations with China and the USSR by withdrawing US troops from "proxy wars" (wars fought between two opposing sides but either side is backed by a foreign power, in this case the United States and the USSR).
To answer the final part of your question, the Nixon Doctrine had initial success. The Doctrine was intrinsic to the Paris Peace Conference in 1973 which saw the end to the Vietnam War. It also allowed Nixon to obtain the Strategic Arms Limitation Treaty (SALT) with the USSR, which limited the amount of nuclear missiles (ICBM's especially), and become the first US President to visit Communist China. The Doctrine was essentially a part of a plan for "peaceful coexistence" between the democracies and the communists, and may have been successful were it not for Nixon's downfall in 1974 and Ford and Carter's lack of continuity in the Doctrine.
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Francisco Vázquez de Coronado</span>
<span>By refusing to consider Cherokee Nation v. Georgia (1831), the Supreme Court denied self-government to a Native American tribe. Prior to 1831, the federal government treated tribes as foreign entities in conducting official interactions with them. In an effort to keep their tribal lands, the Cherokee living within Georgia turned to farming and ranching. They also wrote a constitution and laws reflecting some aspects of U.S. law. The state of Georgia declared all the Cherokee laws void, prompting that nation to appeal to the Supreme Court. Chief Justice John Marshall wrote the opinion dismissing the case, saying that Indian tribes were "domestic dependent nations" and could not turn to the Supreme Court. The case's dismissal allowed Georgia to strip the tribe of its governmental forms. </span>
I think Vassal
Definition of Vassal <span>- </span><span>A person who received a grant of land from a lord in exchange for a pledge of loyalty and services</span>
